rendercheck - simple tests of the X Render extension.

       Eric Anholt, with help from Keith Packard.

X Version 11                                     rendercheck 1.5                                  rendercheck(1)

       Several  limitations  are documented in the TODO file accompanying the source.  Please report any further
       bugs you find to http://bugs.freedesktop.org/.

rendercheck  is  a  set  of simple tests of the X Render extension.  It is designed for authors of Render
       implementations in X Servers.

       rendercheck - simple tests of the X Render extension.

-d|--displaydisplay
              Specifies the display to test against.

       -i|--iteriterations
              Specifies the number of times to repeat each operation before sampling results.   Some  X  Servers
              may behave differently (hardware vs software rendering paths) depending on the previous operations
              done, so this may be used to influence the server's choices.

       --sync Enables synchronous xlib operation, for debugging.

       -t|--teststest1,test2,test3...
              Enables  only a specific subset of the possible tests.  Test names include fill, dcoords, scoords,
              mcoords, tscoords, tmcoords, blend, composite,  cacomposite,  gradients,  repeat,  triangles,  and
              bug7366.  Names must be separated by commas and have no spaces.

       -f|--formatsformat1,format2,format3...
              Enables  only  a  specific  subset  of  the  possible formats.  Only formats listed in the server-
              supported format list are available.  Names must be separated by commas and have no spaces.

       -o|--ops
              Enables only a specific subset of the Render operators.

       -v|--verbose
              Enables verbose printing of information on tests run, and successes and failures.

       --minimalrendering
              Disables copying of offscreen destinations to the window, which is on by default  to  provide  the
              user with visual feedback.

rendercheck[-d|--displaydisplay][-i|--iter][--sync][-t|--teststest1,test2,test3,...][-o|--opsop1,op2,op3,...]
       [-v|--verbose] [--minimalrendering]